Proper air balance of the air distribution system is necessary to maintain adequate comfort with occupied spaces. Room plan changes, occupancy changes, adjustments to volume dampers, and deteriorating equipment operation have resulted into an unbalanced air system. Balancing of the air distribution system to design air quantities is recommended to provide maximum energy efficiency, equipment performance, and improve occupancy comfort. Restoring airflow rates to those shown on the existing mechanical drawings dated, 05/01/1989 and new proposed work, should aid in achieving those desired affects. For areas of the building where the layout has changed, considerations should be taken for distributing the air to these areas appropriately. 2. For the 1st floor corridor system, replace with a direct like-for-like air cooled condensing unit, ACCU-5, located outside on the ground behind the building adjacent to W. Center St., and furnace/cooling coil (F-5/CC-5) located in #102 mechanical room on the 1st floor. Remove existing units and install new units in same location. Reconnect to existing ductwork, flues, condensate, gas piping, etc. 3. For the 2nd floor corridor system, replace with a direct like-for-like air cooled condensing unit, ACCU-6, located outside on the ground behind the building adjacent to W. Center St., Twinned furnace and cooling coil (F-6/CC-6) located in #102 mechanical room on the 1st floor. Remove existing units and install new units in same location and secure and connect to existing ductwork, flues, condensate, gas piping, etc.